To be fair, the Switch version of Unity could still need optimizing too given that it's still new on the system. Unreal 4 was way worse in performance at the PS4/XBO system launch than it is these days.
That's true, too. But in that case, some adjustments need to be made. I don't think Unity on the Wii U is the best, so I had to make some adjustments on the system and Nintendo was nice enough to help me through those points. I'm sure they would do the same with this game, too.